Chad Kroeger and Avril Lavigne have trust issues

The couple, whose 14-month marriage is allegedly on the rocks, are said to have been "fighting a lot" in recent months because they are both very jealous.

A source close to the pair told E! News: "They're having a lot of issues. There's jealousy on both sides. She flirts, he flirts. She's very insecure to begin with."

The insider also revealed that the 29-year-old beauty is desperate to start a family with the Nickelback frontman, 39, but added: "I don't know what's going to happen. She really wants to have a baby. She was hoping, after this album, to take time off and start a family."

It seems cracks first started to show in the couple's relationship shortly after the release of the 'Let Me Go' hitmaker's latest self-titled album in November, which Chad produced.

The source said: "The main issue is this: When they met, they were in work mode. They were doing a collaboration and that's where the attraction stemmed from. She was in the studio and he was producing her. She was also coming off some bad relationships where she didn't really feel appreciated as an artist. She felt she and Chad connected on that level.

"The album didn't do as well as they had hoped...they're finding that they're not seeing eye to eye on a lot of things."

But Chad and Avril are still hoping to work things out and will only file for divorce as a last resort.

The source said: "I think for now they're going to try to work it out."